Upper sash window



FIG. 1 is a perspective view illustrating an upper window sash in accordance with this invention;

FIG. 2 is a back view of the upper window sash illustrated in FIG. 1;

FIG. 3 is a front view of the upper window sash illustrated in FIG. 2;

FIG. 4 is a sectional view taken along the line 4--4 of FIG. 2;

FIG. 5 is a sectional view taken along the line 5--5 of FIG. 2; and,

FIG. 6 is a sectional view taken along the line 6--6 of FIG. 2. 

The ornamental design for an upper sash window, as shown. 